Several optios have worked for students in the past:

• Installing Quartus through a Bootcamp Windows setup.
• Use the ECE-provided virtual lab client and access ECE hosts (a very low overhead option, since the client is minimal).   See http://www.ece-help.gatech.edu/labs/virtual.html. There have been issues with the virtual lab setup not always having support for all features, such as missing devices, library components, etc. Contact help@ece.gatech.edu if you have problems, but be very specific.
• Use Parallels Desktop to create a Windows VM and install Quartus there. See http://blog.terasic.com/running-quartus-ii-with-a-mac-no-problem/
• Same, but with VMware instead of Parallels
• Same, but with VirtualBox.